[libapreq] unknown content-type: `application/octet-stream'

hi, list

I'm using a javascript ajax file uploader, but get this error with mod_perl1.

the js code is like:

        var xhr = new XMLHttpRequest();

        xhr.open("POST", queryString, true);
        xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
        xhr.setRequestHeader("X-File-Name", encodeURIComponent(name));
        xhr.setRequestHeader("Content-Type", "application/octet-stream");
        xhr.send(file);